EXPERIMENTAL STUDY ON FLEXURAL PERFORMANCE OFFIBER-METAL HYBRID SANDWICH BEAM

Abstract

Abstract: In this paper, the fiber-metal hybrid sandwich beam (FMS) was fabricated. From top to bottom, alkali-free glass fiber, the metal sheet with tooth nail, paulownia wood, the metal sheet with tooth nail and alkali-free glass fiber were arranged. Tooth nail was used to connect the metal plate with paulownia and unsaturated polyester resin was used to connect the metal plate with non-alkali fiber glass. According to four-point bending tests, the bending performance and failure modes of FMS with different span-depth ratio were investigated and compared with the ordinary fiber reinforced sandwich beam (FSS). An analytical formula to identify failure modes was also obtained to validate the bearing capacity. The test results show that when span-depth of the beam were 10, 12, 16, 20, 24, the ultimate bearing capacity and bending stiffness of the FMS were increased. The calculated bearing capacity agreed well with the experiment results.

Key words: fiber-metal hybrid sandwich beam, bending property, failure mode, bending stiffness

CLC Number:

TB332

DING Jie-ming, LIU Wei-qing, WAN Li, WANG Lu. EXPERIMENTAL STUDY ON FLEXURAL PERFORMANCE OFFIBER-METAL HYBRID SANDWICH BEAM[J]. Fiber Reinforced Plastics/Composites, 2016, 0(5): 12-16.

References

[1] Zhang JX, Qin QH, Wang TJ. Compressive strength and dynamic response of corrugated metal sandwich plates with unfilled and foam-filled sinusoidal plate cores[J]. Acta Mechanica, 2013, 224(4): 759-775.
[2] Wang ZJ, Qin QH, Zhang JX, et al. Low velocity impact response of geometrically asymmetric slender sandwich beams with metal foam core[J]. Composite Structures, 2013, 98: 1-14.
[3] Lu TJ, Liu T, Deng ZC. Thermoelastic properties of sandwich materials with pin-reinforced foam cores[J]. Science in China Series E: Technological Sciences, 2008, 51(22): 2059-2074.
[4] Pan SD, Wu LZ, Sun YG, et al. Fracture test for double cantilever beam of honeycomb sandwich panels[J]. Mater Lett, 2008, 62: 523-526.
[5] Hou SJ, Ren LL, Dong D, et al. Crashworthiness optimization design of honeycomb sandwich panel based on factor screening[J]. Journal of Sandwich Structures and Materials, 2012, 14(6): 665-678.
[6] A.P.Mouritz, E.Gellert. Review of advanced composite structures for naval ships and submarines[J]. Composite Structures, 2001, 53(1): 2-41.
[7] Dai J. Fatigue assessment methodology for sandwich panels[D]. Los Angeles: University of California los Angeles, 2002.
[8] James. W G. Influence of reinforcement type on the mechanical behavior and fire response of hybrid composites and sandwich structures[D]. New Brunswick: The state university of New jersey, 2004.
[9] Mamalis, A.G., Spentzas, K.N., et al. A new hybrid concept for sa-ndwich structures[J]. Composite Structures, 2008, 83(4): 335-340.
[10] 谢佳卉,周建锋,杨胜春. GLARE层压板的力学性能研究[J]. 结构强度研究, 2009(1): 14.
[11] 方海, 刘伟庆, 万里. 点阵增强型复合材料夹层结构的力学性能实验与分析[J]. 实验力学, 2010(5): 522-528.
[12] 万里, 刘伟庆, 周叮, 等. 齿槽增强泡桐木夹层结构界面性能试验[J]. 南京工业大学大学学报, 2010(5): 1-5.
[13] American Society of Testing and Materials Standard C393-62 Test Method for Flexural Properties of Sandwich Constructions[Z]. Annual Book of ASTM Standards, 2000.
[14] Mohan K, Hon YT, Idapalapati S, et al. Failure of sandwich beams consisting of alumina face sheet and aluminum foam core in bending[J]. Materials Science and Engineering. A, 2005, 409(1): 292-301.
[15] Allen, H.G.. Analysis and Design of Structural Sandwich Panels[Z]. Pergamon, New York.